package study;

import java.util.UUID;

/**
 * @author mayn
 */
public class Uuid {
    public static void main(String[] args) {
        for (int i = 0; i < 50; i++) {
            //注意replaceAll前面的是正则表达式
            String uuid = UUID.randomUUID().toString().toUpperCase();
            System.out.println(uuid);
        }
    }
}
